Q4Multiple choice
th floor. T aking gr ound floor as origin and positive direction upwards for all quantities, which one of the following is correct?
- (a)x < 0, v < 0, a > 0
- (b)x > 0, v < 0, a < 0
- (c)x > 0, v < 0, a > 0
- (d)x > 0, v > 0, a < 0 3.3 In one dimensional motion, instantaneous speed v satisfies 0 ≤ v < v0. (a) The displacement in time T must always take non-negative values. (b) The displacement x in time T satisfies – vo T < x < vo T. (c) The acceleration is always a non-negative number. (d) The motion has no turning points. 3.4 A vehicle travels half the distance L with speed V1 and the other half with speed V2, then its average speed is V1 + V2 (a) 2V1 + V2 (b) V1 + V2 2V1V2 (c) V1 + V2 L (V1 + V2 ) (d) V1V2